The origin of the rubber sucker

The origin of the rubber sucker
Suction cups generally refer to the adsorption organs of animals, which are in the shape of a circular funnel, which can be adsorbed on solid surfaces, and can also have the functions of ingestion and movement. Animals such as cephalopods, hirudines, flies, starfish, and geckos are found on their bodies. The sucker is composed of ring-shaped muscles. When the muscles of the animal’s legs contract, the suckers are compressed and naturally shrink; when they touch the wall, they relax the muscles. Because there is no air in the suckers, the legs become tight under the action of atmospheric pressure. Fastened tightly to the wall.
Artificial suction cups use atmospheric pressure air or water to adhere to non-porous surfaces to form a partial vacuum.
Humans imitated the characteristics of animal suckers and invented vacuum suckers. The suction cup material is made of rubber, which can be operated at high temperature and is mounted on various vacuum holding equipment. In daily life, vacuum suction cups can meet the needs of people to hang living objects at any time. Some backpacks and towels have small suction cups attached to the hooks. When you can't find a place to hang things, you can hang them directly on the wall.